contrary to popular opinion i think its wrong let me explain why if someone was riding their clutch for seconds every time when launching and you ask if anythings wrong everyone here would immediately jump on you and tell you to stop its the same principle for not rev matching you still get the intended effect of launching your car in the previous example but you put more wear and tear on your tranny when there is a simple solution thats easy to do that fixes it just a simple blip is sufficient theres no reason to heeltoe or anything like that unless you enjoy it